EP2669529A4 - Hydraulic system for construction machine having electronic hydraulic pump - Google Patents

Hydraulic system for construction machine having electronic hydraulic pump

Info

Publication number
EP2669529A4
EP2669529A4 EP11856946.6A EP11856946A EP2669529A4 EP 2669529 A4 EP2669529 A4 EP 2669529A4 EP 11856946 A EP11856946 A EP 11856946A EP 2669529 A4 EP2669529 A4 EP 2669529A4
Authority
EP
European Patent Office
Prior art keywords
construction machine
electronic
hydraulic pump
hydraulic system
hydraulic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP11856946.6A
Other languages
German (de)
French (fr)
Other versions
EP2669529B1 (en
EP2669529A2 (en
Inventor
hyun sik Lim
Woo Yong Jung
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HD Hyundai Infracore Co Ltd
Original Assignee
Doosan Infracore Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Doosan Infracore Co Ltd filed Critical Doosan Infracore Co Ltd
Publication of EP2669529A2 publication Critical patent/EP2669529A2/en
Publication of EP2669529A4 publication Critical patent/EP2669529A4/en
Application granted granted Critical
Publication of EP2669529B1 publication Critical patent/EP2669529B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/0426—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with fluid-operated pilot valves, i.e. multiple stage valves
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2292—Systems with two or more pumps
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
    • E02F9/2235—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps including an electronic controller
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
    • E02F9/2242—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance including an electronic controller
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2282—Systems using center bypass type changeover valves
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2296—Systems with a variable displacement pump
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/26—Indicating devices
    • E02F9/267—Diagnosing or detecting failure of vehicles
    • E02F9/268—Diagnosing or detecting failure of vehicles with failure correction follow-up actions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/002—Electrical failure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/875—Control measures for coping with failures
    • F15B2211/8752—Emergency operation mode, e.g. fail-safe operation mode

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Reciprocating Pumps (AREA)
EP11856946.6A 2011-01-24 2011-12-26 Hydraulic system for construction machine having electronic hydraulic pump Not-in-force EP2669529B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020110007073A KR101762951B1 (en) 2011-01-24 2011-01-24 Hydraulic system of construction machinery comprising electro-hydraulic pump
PCT/KR2011/010081 WO2012102488A2 (en) 2011-01-24 2011-12-26 Hydraulic system for construction machine having electronic hydraulic pump

Publications (3)

Publication Number Publication Date
EP2669529A2 EP2669529A2 (en) 2013-12-04
EP2669529A4 true EP2669529A4 (en) 2014-12-10
EP2669529B1 EP2669529B1 (en) 2017-11-01

Family

ID=46581239

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11856946.6A Not-in-force EP2669529B1 (en) 2011-01-24 2011-12-26 Hydraulic system for construction machine having electronic hydraulic pump

Country Status (5)

Country Link
US (1) US9284719B2 (en)
EP (1) EP2669529B1 (en)
KR (1) KR101762951B1 (en)
CN (1) CN103328830B (en)
WO (1) WO2012102488A2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8528684B2 (en) * 2011-11-30 2013-09-10 Deere & Company Charge pressure reduction circuit for improved transmission efficiency
EP2933387B1 (en) * 2012-12-13 2019-08-14 Hyundai Construction Equipment Co., Ltd. Automatic control system and method for joystick control-based construction equipment
KR101969175B1 (en) * 2012-12-24 2019-04-15 두산인프라코어 주식회사 Automatic transmission type excavator
JP6220228B2 (en) * 2013-10-31 2017-10-25 川崎重工業株式会社 Hydraulic drive system for construction machinery
WO2015171803A1 (en) * 2014-05-06 2015-11-12 Eaton Corporation Low noise control algorithm for hydraulic systems
US10487855B2 (en) * 2016-09-29 2019-11-26 Deere & Company Electro-hydraulic system with negative flow control
KR102423410B1 (en) * 2017-03-21 2022-07-21 현대두산인프라코어 주식회사 Method of driving a construction machine in an emergency and apparatus for performing the same
CN112567141B (en) * 2018-03-15 2023-04-14 日立建机株式会社 Construction machine
CA3097337C (en) * 2018-07-11 2022-08-09 Halliburton Energy Services, Inc. Using a load sense pump as a backup for a pressure-compensated pump
CN112805440B (en) * 2018-10-02 2023-03-14 沃尔沃建筑设备公司 Device for controlling working units of construction equipment
CN111441416A (en) * 2020-05-07 2020-07-24 金华深联网络科技有限公司 Excavator operation control method and system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07133808A (en) * 1993-11-11 1995-05-23 Hitachi Constr Mach Co Ltd Hydraulic drive unit of construction machine
JPH09324443A (en) * 1997-02-10 1997-12-16 Komatsu Ltd Control device for construction machine
JPH10174512A (en) * 1996-12-16 1998-06-30 Yanmar Agricult Equip Co Ltd Neutral detector for self-traveling vehicle
JP2006097855A (en) * 2004-09-30 2006-04-13 Kobelco Contstruction Machinery Ltd Travel control device for construction machine
WO2009084853A2 (en) * 2007-12-27 2009-07-09 Doosan Infracore Co., Ltd. Electric oil pressure system of construction equipment
KR20100134332A (en) * 2009-06-15 2010-12-23 볼보 컨스트럭션 이큅먼트 에이비 Locking apparatus of control lever of construction equipment

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2670815B2 (en) 1988-07-29 1997-10-29 株式会社小松製作所 Control equipment for construction machinery
US5138838A (en) * 1991-02-15 1992-08-18 Caterpillar Inc. Hydraulic circuit and control system therefor
JPH06213205A (en) 1993-01-14 1994-08-02 Hitachi Constr Mach Co Ltd Oil pressure driving device of hydraulic machine
JP3625149B2 (en) 1999-03-31 2005-03-02 コベルコ建機株式会社 Hydraulic control circuit for construction machinery
DE10124564A1 (en) * 2001-05-14 2002-11-28 Joma Hydromechanic Gmbh Control of variable-displacement lubricant pump for use in internal combustion engine, involves measurement of engine parameters and matching pump delivery to engine requirements
KR100641393B1 (en) 2004-12-07 2006-11-01 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 Hydraulic control circuit and method thereof
US7905089B2 (en) * 2007-09-13 2011-03-15 Caterpillar Inc. Actuator control system implementing adaptive flow control
WO2010071344A1 (en) * 2008-12-15 2010-06-24 두산인프라코어 주식회사 Fluid flow control apparatus for hydraulic pump of construction machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07133808A (en) * 1993-11-11 1995-05-23 Hitachi Constr Mach Co Ltd Hydraulic drive unit of construction machine
JPH10174512A (en) * 1996-12-16 1998-06-30 Yanmar Agricult Equip Co Ltd Neutral detector for self-traveling vehicle
JPH09324443A (en) * 1997-02-10 1997-12-16 Komatsu Ltd Control device for construction machine
JP2006097855A (en) * 2004-09-30 2006-04-13 Kobelco Contstruction Machinery Ltd Travel control device for construction machine
WO2009084853A2 (en) * 2007-12-27 2009-07-09 Doosan Infracore Co., Ltd. Electric oil pressure system of construction equipment
KR20100134332A (en) * 2009-06-15 2010-12-23 볼보 컨스트럭션 이큅먼트 에이비 Locking apparatus of control lever of construction equipment

Also Published As

Publication number Publication date
CN103328830B (en) 2015-11-25
US9284719B2 (en) 2016-03-15
EP2669529B1 (en) 2017-11-01
KR20120085622A (en) 2012-08-01
WO2012102488A2 (en) 2012-08-02
US20130312403A1 (en) 2013-11-28
EP2669529A2 (en) 2013-12-04
KR101762951B1 (en) 2017-07-28
WO2012102488A3 (en) 2012-10-18
CN103328830A (en) 2013-09-25

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